<template>
    <el-row class="login-container">
        <el-col :lg="16" :md="12" class="left">
            <div>
                <div>欢迎光临</div>
                <div>此站点是《vue3 + vite实战商城后台开发》视频课程的演示地址</div>
            </div>
        </el-col>
        <el-col :lg="8" :md="12" class="right">
            <h2 class="title">欢迎回来</h2>
            <div>
                <span class="line"></span>
                <span>账号密码登录</span>
                <span class="line"></span>
            </div>
            <el-form ref="formRef" :rules="rules" :model="form" class="w-[250px]">
                <el-form-item prop="username">
                    <el-input v-model="form.username" placeholder="请输入用户名">
                        <template #prefix>
                            <el-icon><user /></el-icon>
                        </template>
                    </el-input>
                </el-form-item>
                <el-form-item prop="password">
                    <el-input v-model="form.password" type="password" placeholder="请输入密码" show-password>
                        <template #prefix>
                            <el-icon><lock /></el-icon>
                        </template>
                    </el-input>
                </el-form-item>
                <el-form-item>
                    <el-button round color="#626aef" class="w-[250px]" type="primary" :loading="loading" @click="onSubmit">登 录</el-button>
                </el-form-item>
            </el-form>
        </el-col>
    </el-row>
</template>

<script setup>
import { toast } from '~/composables/util'
import { useAppStore } from '~/stores/app'

const router = useRouter()
const appStore = useAppStore()

// do not use same name with ref
const form = reactive({
    username: '',
    password: '',
})

const rules = {
    username: [
        {
            required: true,
            message: '用户名不能为空',
            trigger: 'blur',
        },
    ],
    password: [
        {
            required: true,
            message: '用户名不能为空',
            trigger: 'blur',
        },
    ],
}

const formRef = ref(null)
const loading = ref(false)
const onSubmit = () => {
    formRef.value.validate((valid) => {
        if (!valid) {
            return false
        }
        loading.value = true
        appStore
            .login({ ...form })
            .then((res) => {
                toast('登录成功')
                router.push('/')
            })
            .finally(() => {
                loading.value = false
            })
    })
}

// 监听回车事件
function onKeyUp(e) {
    if (e.key == 'Enter') onSubmit()
}

// 添加键盘监听
onMounted(() => {
    document.addEventListener('keyup', onKeyUp)
})
// 移除键盘监听
onBeforeUnmount(() => {
    document.removeEventListener('keyup', onKeyUp)
})
</script>

<style scoped>
.login-container {
    @apply min-h-screen bg-indigo-500;
}
.login-container .left,
.login-container .right {
    @apply flex items-center justify-center;
}
.login-container .right {
    @apply flex-col bg-white;
}
.left > div > div:first-child {
    @apply mb-4 text-5xl font-bold text-white;
}
.left > div > div:last-child {
    @apply text-sm text-gray-200;
}
.right .title {
    @apply text-3xl font-bold text-gray-800;
}
.right > div {
    @apply my-5 flex items-center justify-center space-x-2 text-gray-300;
}
.right .line {
    @apply h-[1px] w-16 bg-gray-200;
}
</style>
